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@Jason Smith
I'm not using any custom renderers on the pages where I have seen this.
I simply use the app, scroll some lists, navigate between pages, then suddenly it crashes with:
E AndroidRuntime: Caused by: android.runtime.JavaProxyThrowable: System.NotSupportedException: Unable to activate instance of type Xamarin.Forms.Platform.Android.<SOMETHING> from native handle 0x7fc5d26ca8 (key_handle 0xe5d4fb0). ---> System.MissingMethodException: No constructor found ...
Especially I'm not inheriting from either of:
Xamarin.Forms.Platform.Android.ListViewAdapter
Xamarin.Forms.Platform.Android.ConditionalFocusLayout
(the two classes with "missing" ctors, from above)
As mentioned I'm using the latest stable XF 2.1.0.6526, but the issue only occur with ALPHA channel in Xamarin Studio.
I know I raised it against XF, since it is always the ctor of some XF Android renderer that is "missing", but I believe it has to do with the latest X.Android 6.0.99.544.
Anyway, I never see it when using the BETA channel, ie. X.Android 6.0.2.1.
In particular I suspect the new Java interop stuff:
https://developer.xamarin.com/releases/android/xamarin.android_6/xamarin.android_6.1/#Java_Interop
but it's just a hunch.
I'm sorry I do not have a simple reproduction :-/
Best regards, Kasper

@Kasper,
That's good news! I believe that you are encountering the same issue as described in https://bugzilla.xamarin.com/show_bug.cgi?id=32462, which should be fixed in 2.2.0-pre1. I will mark this bug as a duplicate for now, if you do not mind.
Thank you!
*** This bug has been marked as a duplicate of bug 32462 ***

I've the same as T. Krieger.
A Listview in a ListView/TableView makes the App crash.
The first time the View is shown there isn't a problem. But when the view goes out of the view, and then back the app will crash.
Error is:
Unable to activate instance of type Unable to activate instance of type Xamarin.Forms.Platform.Android.ListViewAdapter from native handle 0xffccb7ac (key_handle 0xb2894b1). ---> System.MissingMethodException: No constructor found for Xamarin.Forms.Platform.Android.ListViewAdapter::.ctor(System.IntPtr, Android.Runtime.JniHandleOwnership) ---> Java.Interop.JavaLocationException: Exception of type 'Java.Interop.JavaLocationException' was thrown.

I also can confirm that a Xamarin Forms ListView inside of a ListView on Android fails with the latest Xamarin binaries Exact same code under UWP works just fine. I have a repro app, but it requires a specific BTLE device (Estimote) to cause the issue since that's what I'm working on, so this is not fully resolved.

The repro can be found here:
https://github.com/ctacke/universal-beacon
Use commit 3b836b5bfa5aee3a458ea74c8da57592ea659af4.
The EddystoneTLMViewCell is what kills it. Commenting out the internal ListView eliminates the issue.

I also get the same problem. When I have a ListView inside of a ListView. My Android app throws and unhandled exception.
Additional Info:
My page is the first page of the app.
Interestingly, it only happens when using NavigationPage. If I set my MainPage in app.xaml.cs directly to my page, then it works fine. However, if I set MainPage to a NavigationPage that directs to my page then the unhandled exception occurs.
Unhandled Exception Message:
System.NotSupportedException: Unable to activate instance of type Xamarin.Forms.Platform.Android.ListViewAdapter from native handle 0x42b0003d (key_handle 0xa90094f8). ---> System.MissingMethodException: No constructor found for Xamarin.Forms.Platform.Android.ListViewAdapter::.ctor(System.IntPtr, Android.Runtime.JniHandleOwnership) ---> Java.Interop.JavaLocationException: Exception of type 'Java.Interop.JavaLocationException' was thrown.
Thanks for the help!

i'm getting this when writing custom renderer for ViewCellRenderer in GetCellCore
this appear when trying to click many times of different cells
i fix this
if (cell== null)
{
cell = base.GetCellCore(item, convertView, parent, context);
}

Same thing happened to me as well. I have a ListView, and inside the ListView template there's another ListView. When I navigate to another view and come back, it throws this exception. Actually I do not know any other component to populate a repeating template inside a ListView.
Imagine I have Contacts view populated with ListView. Each list view item is a contact. Each contact has N phone numbers. How can I repeat the phone numbers in the list view template?

If nested listviews are not supported, then what are our options for doing nested lists of indeterminate size? I've been working on this same problem for weeks and this seems to be the only solution that I've made work properly.

I had the same exception "Unable to activate instance of type Xamarin.Forms.Platform.Android.ListViewAdapter from native handle". I was able to resolve when I modified the access specifier of the custom Renderer class from internal to public

If Nested ListViews are not supported, wouldn't it be better then to provide a more meaningful exception message? For example, "Nested ListViews are not supported. Please remove ListView from a ListView"